| 摘要 |
A method is provided of processing digital image data representing an image of an object to determine data representing a boundary for said object, the method comprising: inputting said image data; initializing a level set function representation of an interface for approximating said boundary; determining a motion of said interface subject to a combined cost function comprising a first cost comprising a signed distance constraint on said interface level set function representation and a second cost comprising a measure of said interface responsive to a density or metric of said image; modifying said level set function representation of said interface in accordance with said determined motion; repeating said determining and modifying such that said interface converges on said boundary; and determining boundary data representing said boundary from said converged level set function interface representation. |
